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“Calibration pH” menu.
pH calibration procedure involves two calibration points and it requires two buffer solutions. Default buffer solutions are
pH 4.00 and pH 7.00. pH reading value can be also 30°C temperature compensated from “CA” eld. From “Probe”
menu choose “Calibration pH”.
In the following example instrument will calibrate pH using default buffer solutions values.
Note: this procedure assumes that instrument is correctly congured and a working pH probe connected.
Otherwise unattended results may occurr.
Calib 1st Point.
Once into “pH Calibration” menu move wheel on “P1” then press wheel to enter into rst point calibration submenu.
Prepare 7.00pH buffer solution and dip probe’s sensor on it. Wait until reading value is stable and according to buffer
solution value move wheel until it is the same on display (“Cal. at” eld). Default value is 7.00pH. To end procedure
move cursor on “OK” and press wheel to proceed to next step.
Note: buffer solution value may change if environment temperature it’s different than 20°C. Read solution’s
label for more information. According to this occurrence “pH Default” must be changed.
pH7
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